Wall formwork and wall formwork system

ABSTRACT

The invention relates to a wall formwork ( 1 ) for concrete structures, comprising a basic body ( 12 ), an outer face configured as a formwork facing ( 19 ), and anchor holes ( 5 ) for the detachable connection to other wall formworks. It is proposed that the anchor holes ( 5 ) be disposed with a substantially uniform grid spacing ( 4 ) relative to each other, and to dimension the wall formwork ( 1 ) in such a way that the spacing ( 4 ) of the anchor holes ( 5 ) to the outer vertical ( 7 ) and/or horizontal ( 6 ) boundary of the wall formwork ( 1 ) corresponds to no more than half of the grid spacing ( 4 ), preferably substantially half of the grid spacing ( 4 ).

The invention relates to a wall formwork according to the preamble ofclaim 1. The invention further relates to a wall formwork systemcomprising such a wall formwork and a multi-purpose wall formwork aswell as a wall formwork system comprising a plurality of wall formworks.Wall formworks are known from DE 10 2007 006 907 A1, FR 2 537 192 A1, GB2 026 072 A, the brochures “Peri GmbH: Vario GT24, D-89264 Weiβenhorn,05/2008”, “Peri GmbH: TRIO Housing, D-89264 Weiβenhorn, 09/2009” and“Peri GmbH: MAXIMO, D-89264 Weiβenhorn, 10/2010”.

A wall formwork within the sense of the present invention is used informwork engineering for concrete structures, i.e. for concretingconcrete or reinforced concrete structures. A wall formwork is typicallyused for producing formworks for walls, columns, foundations, shafts orthe like. A wall formwork comprises a formwork facing on the frontfacing towards the concrete and elements supporting the formwork facingon the back, such as frames, longitudinal beams and crossbars. The twosides of a wall to be concreted are delimited by a plurality of wallformworks. The outer face of each wall formwork configured as a formworkfacing in that case adjoins the concrete. Wall formworks facing eachother are, as a matter of principle, retained by a plurality of anchorrods. The anchor rods are in this case pushed through openings—referredto as “anchor holes”—in the wall formworks, and attached at their endsto the elements supporting the respective formwork facing in such a waythat at least the tensile force acting upon the anchor rods duringconcreting is absorbed.

When anchoring the wall formwork, various requirements are being madewith regard to the wall formwork in order to absorb the loads producedby pouring the liquid concrete—also called concrete pressure—in the wallformwork. Commonly used wall formworks typically comprise anchor holesdisposed at the edge. Accordingly, an anchor rod accommodated in thewall formwork at the edge can be used also to engage a directly adjacentwall formwork at the same time, in order thus to enable a jointattachment of wall formworks situated next to one another. Accordingly,the anchor holes that are not used must be sealed tightly in order toprevent the concrete from running out of the intermediate space formedby wall formworks.

It is also necessary, when preparing wall formworks, to configureindividual dimensions and complex courses of the wall. In particular thepreparation of wall formworks for corners, corner joints, columns,pillars, wall projections or the like regularly requires the storage ofspecial wall formworks and accessories, in particular with individualdimensions, so the construction and assembly is unsatisfactory in manyrespects. The resulting expenditure is relatively high for a rationalassembly of wall formworks.

A frame formwork system for manufacturing corners and T-shapedintersections is known from document DE 10 2007 006 907 A1. The systemcomprises an inner corner element comprising two inner legs angledrelative to each other, an outer corner member as well as tworectangular frame formwork elements. In order to reduce the total numberof anchor holes in the frame formwork element, it is proposed that theanchor holes of one frame formwork element be disposed centrally betweentwo parallel lateral outer edges. The frame formwork corner system isprimarily designed to reduce the expenditure of a frame panel formworkin the case of corners or T-shaped intersections.

Providing special individual wall formworks, such as inner cornerelements and outer corner elements, as a matter of principle entails theproblem that such a frame formwork system cannot be used in a versatilemanner for individual dimensions of a complex wall formwork, for examplefor different corners, columns, pillars, wall projections or the like.

Unless otherwise stated below, the above-mentioned features can becombined in any manner, individually or in any combination, with thesubject matter of the invention described below.

U.S. Pat. No. 5,836,126 discloses a modular form unit for architecturalconcrete walls comprising not more than two tie holes for each facingsheet.

It is the object of the invention to further develop a wall formwork forconcrete structures.

The object of the invention is achieved by means of a wall formworkhaving the features of claim 1 respectively 2, as well as by means ofwall formwork system comprising such a wall formwork. Advantageousembodiments are apparent from the dependent claims.

First of all, it is proposed that the anchor holes be disposed with auniform or at least substantially uniform grid spacing relative to eachother, the wall formwork being dimensioned in such a way that thespacing of the anchor holes to the outer boundary of the wall formwork,which in the erected state extends vertically and/or horizontally,corresponds to half of the grid spacing or at least substantially halfof the grid spacing.

What is essential is the idea of reducing the loads in a wall formworkby a specific arrangement of the anchor holes. The anchor holes aredisposed in a uniform, i.e. substantially equally spaced-apart gridspacing relative to each other in order to optimize the wall formworkwith regard to the arising concrete pressure. In the process, thespacing of the anchor holes to the outer boundary of the wall formworkis also set in a specific manner. If a wall formwork is prepared withwall formworks of this type and filled with concrete, it is thus ensuredthat the wall formwork is exposed to the load particularly uniformly insuch a way that the loads are substantially evenly distributed acrossthe arrangement of the anchor holes. The arrangement, which is, inparticular, symmetrical, contributes to the concrete forces arisingbeing absorbed in a uniformly distributed manner across the anchorholes. Excessive loads, and thus the danger of damage to the wallformwork, particularly in the region of the anchor holes and the anchorpoints, are thus avoided in an improved manner, so that an overallimproved durability of the wall formwork is achieved. The arrangement ofthe anchor holes moreover contributes to preparing a rugged formwork ina manner that is advantageous as regards the assembly with few anchorholes, and thus, also few anchor points. The fewer anchor rods have tobe used, the smaller the expenditure for assembly and dismantling.

If several formworks are connected to each other, for example by meansof connecting means such as clips or aligning clamps, in order toprepare a large-surface formwork, the arising concrete pressure canincrease, particularly depending on the height of the wall formwork. Inthat case, the concrete pressure rises in particular in the lower regionof the lowermost wall formwork. The uniform arrangement of the anchorholes is in that case advantageously designed in such a way that thegrid spacing is adapted to the highest possible load on a wall formwork.Thus, this makes wall formworks possible that, both individually as wellas in combination, are particularly well adapted to the loads.

Furthermore, a wall produced in this manner has, in the solidifiedconcrete, a correspondingly uniform anchor hole pattern characterized bythe impressions of the anchor holes. Such a regularly distributed, inparticular symmetrical, anchoring pattern is particularly attractivefrom a visual standpoint and can be used expediently for producingexposed concrete. This reduces the manufacturing expenditure for theproduction of exposed concrete.

What is particularly also advantageous in the wall formwork according tothe proposal is that the arrangement of the anchor holes is designed insuch a way that no individual corner wall formworks for different wallthicknesses are required for forming corners or corner-shapedgeometries. The wall formworks can be combined in a flexible manner,particularly with multi-purpose wall formworks to be explained later,without having to store special corner wall formworks with individualdimensions. Consequently, the overall number of wall formworks can bereduced, which enables a rational preparation of wall formworks.

Preferably, the anchor holes are disposed symmetrically. In particular,the grid spacing is chosen in such a way that the horizontal gridspacing of the anchor holes corresponds to the vertical grid spacing ofthe anchor holes. In a particularly preferred embodiment, the anchorholes are disposed axisymmetrically in the wall formwork. In that case,the arrangement of the anchor holes is designed in such a way that theanchor holes extend along a horizontally or vertically extending axis.

In one embodiment of the invention, the anchor holes are disposed on atleast two parallel spaced-apart axes. The parallel spaced-apart axespreferably extend in the vertical direction of the wall formwork. Inanother embodiment, three of more anchor holes are provided along avertical axis. The arrangement of the anchor holes on parallelspaced-apart axes makes the rugged and large-surface configuration ofwall formworks possible. This makes it possible to prepare wallformworks for large surfaces in an efficient manner. Nevertheless, it ispossible in principle to arrange the wall formworks in a very flexiblemanner, particularly both standing as well as lying. A standing wallformwork is brought into a lying position by a 90° rotation. The numberof required wall formworks can thus be reduced.

Preferably, the height of the wall formwork is between 260 cm and 400cm. Particularly preferred are wall formworks with a height of 280 cm to320 or with a height of 340 to 380 cm. In a further embodiment, thewidth of the wall formwork is between 200 cm and 280 cm, more preferablybetween 220 cm and 260 cm. Thus, the chosen formats of the wallformworks enable the rational forming of large surface areas. Incontrast to the prior art, particularly rugged wall formworks are thusprovided that reliably anchor a wall formwork using few anchor holes,i.e. anchor points. In particular, the formats of the wall formworks areselected in such a way that they are compatible with conventional wallformworks. This ensures that the wall formworks according to theproposal can be used in a variety of ways and can be combined withconventional wall formworks.

Particularly preferred dimensions of the wall formworks according to theproposal are formats having a width of 45 cm, 60 cm, 75 cm, 90 cm, 120cm or 240 cm, as well as a height of 90 cm, 120 cm, 300 cm or 360 cm.

In a preferred embodiment, the grid spacing of the anchor holes relativeto each other is at least 60 cm, more preferably at least 80 cm.Alternatively, the grid spacing of the anchor holes relative to eachother is no greater than 160 cm, more preferably no greater than 140 cm.This ensures a particularly rugged structure in the dimensioning of thewall formworks.

In another preferred embodiment, the anchor holes at the edge have aspacing of at least 20 cm, more preferably at least 40 cm, to the outerboundary of the wall formwork. The anchor holes on the edge denoteanchor points that are disposed adjacent to the outer edge of the wallformwork in at least one direction. Thus, this leaves sufficient spacefor the anchor holes disposed at the edge on the wall formwork to beable to securely attach anchor rods for anchoring the wall formwork.Since the specifically provided anchor holes of a wall formwork are inprinciple all being used for anchoring the wall formwork, the sealing ofanchor points that are not required can be omitted. This contributes toa rational forming of large surface areas.

In one embodiment, the basic body of the wall formwork, i.e. thesupporting elements, are made from metal, preferably light metal. Thebasic body can be made, for example, from hot-dipped galvanized steel orextruded light metal. In a preferred embodiment, the basic body of thewall formwork is configured as a frame. The frame preferably compriseslongitudinal beams and crossbars, which are preferably configured in aprofile form for an improved stiffening of the frame.

Preferably, the arrangement of the anchor holes in the wall formwork isdesigned in such a way that the anchor holes extend through the frame ofthe wall formwork. The forces acting on the formwork facing can thus beintroduced into the frame of the wall formwork in an improved manner. Inthis case, it is particularly advantageous to dispose the anchor holeson longitudinal beams and/or crossbars of the frame that are configuredin a reinforced manner, in order to enable a constructionallyadvantageous anchoring.

The wall formworks are preferably configured in such a manner that theycan also be mounted rotated by 90°, if so required. In principle, theenables a flexible connection of wall formworks one above the other ornext to each other in order to build up a large-surface wall formwork.As required, the wall formworks can then be stacked in a standing orlying state. It is particularly advantageous to correspondinglydimension the dimensions of the wall formworks so as to be compatible,so that the anchor holes and anchor points are aligned with an oppositewall formwork also if mounted rotated by 90°. The wall formworks canthus be combined with each other in a variety of ways, so that thenumber of required wall formworks, in particular of the differentformats, can on the whole be reduced.

According to another teaching, which is important in its own right,protection is sought for a multi-purpose wall formwork, in which atleast one horizontally extending anchor hole row with a plurality ofanchor holes is provided, on which at least one closure means for anchorholes can be or is attached. The closure means is preferably attached tothe outer face configured as a formwork facing in such a way that theclosure means substantially ends flush with the outer face. Inparticular, the closure means for the anchor holes serves for closinganchor holes that are not required, i.e. anchor points of an anchor holerow.

In particular, the closure means is configured in such a way that oneanchor hole of the anchor hole row remains free for anchoring. Theremaining anchor hole of a anchor hole row that is not closed can thenbe used for anchoring the multi-purpose wall formwork.

At first, it is important to provide a plurality of anchor holes in theform of an anchor hole row, in which anchor points that are not requiredcan be closed as needed. The multi-purpose wall formwork can thus beflexibly disposed for anchoring with further wall formworks, wherein,depending on the circumstances, anchor holes that are not required canbe closed with a closure means. The closure means ensures that noconcrete leaks from the anchor points that are not required.Furthermore, this makes it possible to prepare a uniform anchor holepattern in the solidified concrete, in which only those anchor pointsthat are used for anchoring remain visible.

Particularly advantageously, the multi-purpose wall formwork accordingto the proposal can be used for preparing a complex wall formwork forcorners, columns, pillars, wall projections or the like. For thispurpose, one or more multi-purpose wall formworks can be flexiblycombined with further wall formworks. The adaptability of themulti-purpose wall formwork ensures that the assembly-relatedexpenditure for preparing such wall formworks is reduced considerably.Furthermore, the number of individual formworks to be stored as well asthe corresponding accessories can be reduced, which makes a rationalforming possible.

Moreover, due to the adaptable anchor points, the multi-purpose wallformwork can be used for length compensation when preparing a wallformwork. This contributes to reducing considerably the number ofrequired formats of a wall formwork.

The basic structure of the multi-purpose wall formwork corresponds tothe wall formwork already explained. All of the statements made inrespect of the wall formwork that are suitable for describing theconfiguration of the multi-purpose wall formwork apply mutatis mutandisto this additional teaching.

Preferably, the anchor holes of an anchor hole row are disposed inuniform spacings. In particular, the spacing of the anchor holesrelative to each other is 3 cm to 7 cm, for example 5 cm. This makes itpossible to flexibly adapt the multi-purpose wall formwork for anchoringso as to correspond to the given spacings.

In one embodiment, the anchor hole row is configured as a depression onthe outer face configured as a formwork facing. Preferably, thedepression is configured in such a way that one or more closure meanscan be attached. Then, a closure means, such as a panel, strip or thelike can be introduced into the depression, wherein the closure means ismade in such a way that the anchor holes of the anchor hole row can beclosed tightly.

Preferably, the closure means is connected to the anchor hole row by apositive and/or non-positive connection. A detachable connection, suchas a snap-in connection, is particularly advantageous. This enables aflexible attachment of a closure means to the anchor hole row. Inprinciple, several closure means on a single anchor hole row can also beprovided, which complement each other correspondingly, in order to causethe anchor hole row to be closed tightly.

In order to make possible a flexible selection of the anchor hole of ananchor hole row used for anchoring, the closure means in one embodimentalready comprises an anchor hole that can be used as an anchor point. Inthat case, the closure means can be adapted correspondingly to therequired width of a multi-purpose wall formwork in order to provide thedesired anchor point in an anchor hole row.

In another embodiment, the closure means is configured to be separable,preferably in such a way that sections and/or hole portions of theclosure means are detachable. Depending on the desired anchor point, thecorresponding section and/or hole portion of a closure means can beremoved in order to enable anchoring. For this purpose, the closuremeans can be configured in such a manner that a perforation, notch,predetermined breaking point or the like is provided for the simplifiedseparation of the sections and/or hole portions. It is particularlyadvantageous to provide the separable hole portions of a closure meansin an axially aligned manner relative to the anchor holes of a anchorhole row. If the closure means is attached to an anchor hole row, theseparable hole portions then preferably lie over the anchor hole of themulti-purpose wall formwork.

In another embodiment, the anchor hole row is rigidly connected to thebasic body of the wall formwork and for this purpose preferablycomprises a reinforcing strip in the basic body. In particular, thereinforcing strip is accommodated in the frame of the basic body. Inparticular, the arrangement of the reinforcing strip in the frame isdesigned in such a way that the reinforcing strip is disposed betweencrossbars of the frame. This makes an embodiment of the anchor hole rowin the wall formwork possible that is constructionally particularlyadvantageous.

In order to make possible a flexible connection on the lateral flatsides of a multi-purpose wall formwork, transverse holes are provided inone embodiment on the flat side of the multi-purpose wall formwork,which in particular extend substantially orthogonally to the anchorholes. Thus, the multi-purpose wall formwork can be connected in avariety of ways with other wall formworks, in order to prepare, inparticular, a precise corner-shaped wall formworks. It is particularlyadvantageous to provide the transverse holes at the level of the anchorholes. Thus, this ensures compatibility with respect to other wallformworks or multi-purpose wall formworks. Particularly preferably, thetransverse holes are provided on both lateral flat sides as well as,optionally, on the lower and upper flat side of a multi-purpose wallformwork in order to obtain a standing, lying, laterally and/orvertically offset assembly option.

Preferably, a multi-purpose wall formwork comprises at least twohorizontally extending anchor hole rows. The spacing of the anchor holerows that extend parallel to each other in particular corresponds to thegrid spacing of a wall formwork described above. This ensures thecompatibility of a multi-purpose wall formwork with a wall formworkdescribed above, so that they can be combined with one another in aflexible manner.

Particularly preferred dimensions of the multi-purpose wall formworksaccording to the proposal are formats having a width of 85 cm to 125 cm,preferably of 105 cm, as well as a height of 90 cm, 120 cm, 300 cm or360 cm.

According to another aspect of the invention, a wall formwork systemcomprising at least one wall formwork and at least one multi-purposewall formwork is proposed. The multi-purpose wall formwork correspondsto the multi-purpose wall formwork explained above, so that in thisregard, reference may be made to the statements above in their entirety.

The arrangement consisting of the wall formwork and the multi-purposewall formwork makes it possible to prepare corner-shaped wall formworkswith simple means. The adaptability of the multi-purpose wall formworkensures that the wall formworks can be combined in any way in order toprepare a rugged wall formwork. Furthermore, due to the adaptability ofthe multi-purpose wall formwork, the arrangement permits a lengthcompensation when preparing a formwork. This contributes to preparing avariety of formworks with a small number of wall formwork formats andelements.

According to another aspect of the invention, a formwork system isproposed, comprising a plurality of wall formworks. What is important isthat the wall formworks have at least two different dimensions, inparticular height and/or width. This makes it possible to combine thewall formworks in a flexible manner. In particular, it is thus possibleto arrange differently dimensioned wall formworks in a standing, lying,vertically and/or laterally offset manner relative to one another, inorder to, for example, prepare a flexible stack of a wall formwork for alarge-surface formwork. At least one wall formwork corresponds to thewall formwork according to the proposal explained above, so that in thisregard, reference may be made to the statements above in their entirety.

Particularly preferably, the arrangement of the wall formworks isdesigned in such a way that the anchor holes are disposed with a uniformgrid spacing relative to one another, at least with a grid spacing of atleast 40 cm, more preferably at least 60 cm. This also makes it possibleto configure particularly large-surface wall formworks so as to be equalto the loads and to obtain a correspondingly uniform anchor hole patternin the solidified concrete.

The invention is explained in more detail below with reference toexemplary embodiments. In the Figures:

FIG. 1 shows a schematic representation of wall formworks according tothe proposal,

FIG. 2 shows a schematic representation of a multi-purpose wallformwork,

FIG. 3 shows a detailed view of a multi-purpose wall formwork, and

FIG. 4 shows a formwork with wall formworks disposed standing and lying.

Wall formworks 1 according to the proposal with different dimensions asregards both height and width are apparent from the illustration in FIG.1, with the outer face configured as a formwork facing 19 being shown.The wall formworks 1 have uniformly distributed anchor holes 5. Theanchor holes 5 are disposed relative to one another with a grid spacing2, 3. In the case of wall formworks 1 whose anchor holes 5 are disposedalong two parallel spaced-apart, in particular vertically extending,axes, the horizontal grid spacing 2 preferably corresponds to thevertical grid spacing 3, so that a symmetrical, in particularaxisymmetrical, arrangement of the anchor holes is produced. It is alsoapparent from the illustration in FIG. 1 that the spacing of the anchorholes 5 to the outer boundaries 6, 7 corresponds at least substantiallyto half of the grid spacing 2, 3. The outer boundaries of a wallformwork are formed by horizontal edge boundaries 6 and vertical edgeboundaries 7.

Above the wall formworks 1, wall formworks 20 having two anchor holes 5are disposed. The spacing between the two anchor holes is twice as largeas the distance from one hole to the vertical edge boundary 7.

The formwork shown in FIG. 1 comprises a wall formwork 21 with only onecentrally disposed anchor hole 5. The spacing of the anchor hole 5 ofthe wall formwork 21 to its vertical and/or horizontal edge is half ofthe spacings 2 and 3 between two anchor holes of a wall formwork 1, inorder to be able to be suitably combined with the wall formworks 1 whileminimizing the number of required anchor rods.

A wall formwork 22 comprises an anchor hole 5 whose spacing to thevertical edge 7 is half of the spacings 2 and 3 in order to be able tobe suitably combined with the wall formworks 1 while minimizing thenumber of required anchor rods.

Therefore, the invention generally also includes a system with wallformworks, which comprises wall formworks with only a single hole, whichhas a spacing to vertical and/or horizontal boundaries that is half thesize of the spacings 2 and/or 3.

The differently dimensioned wall formworks 1 can be combined in anyway—as apparent from FIG. 1—to form a wall formwork system, in order toform a large-surface wall formwork. Accordingly, it is possible toarrange the wall formworks 1 in a variety of ways, standing, lying,vertically and/or laterally offset relative to each other. Thus, it ispossible to use each of the wall formworks shown in FIG. 1 rotated by90°. Primarily, this applies to the wall formworks 1 with at least twoanchor holes 5 that have a spacing to each other that is twice the sizeof the respective spacing to the vertical and horizontal boundary. Ifsuch a wall formwork 1 is inserted rotated by 90°, the anchor holepattern does not change. Therefore, it is not necessary to alter thenumber of anchor rods in order to be equal to the loads.

The connection of adjacent wall formworks 1 typically is done by meansof connecting means provided on the supporting frames of wall formworks,such as clips or aligning clamps, which thus make it possible to movethe interconnected wall formworks together, for example using a crane.This facilitates the fabrication and assembly of large-surface wallformworks.

Compared with the prior art, the anchor holes 5 in the wall formwork 1are provided at uniform spacings relative to each other. The gridspacings 2, 3 are maintained also in the case of a combination ofdifferently dimensioned wall formworks 1, as is apparent from FIG. 1. Inprinciple, wall formworks with smaller dimensions can also be providedtowards the upper end, for example wall formworks with only one or twoanchor holes. Since the loads in the upper region are, as a rule,smaller than the loads in a lower region of a wall formwork, the overallstability of a wall formwork is not affected. It is particularlyadvantageous to adapt the grid spacings of the lowermost wall formworks1 so as to correspond to the greatest loads in a wall formwork. Thisensures that large-surface formworks are also reliably anchored and havea substantially symmetrical anchor hole pattern, which is particularlyadvantageous in particular in the production of exposed concrete.

For the aforementioned reasons, the uniform grid spacings 2, 3 of thedifferently dimensioned wall formworks are preferably selected in such away that the wall formworks can be mounted rotated by 90°. In that case,the spacing 2 has the same size as spacing 3. This increases thecompatibility of the wall formwork with each other. The number ofrequired formats of wall formworks can be reduced accordingly.

FIGS. 2 and 3 illustrate a multi-purpose wall formwork 8 with threeparallel spaced-apart anchor hole rows 9. The spacing of the anchor holerows is adapted, in particular, to the grid spacings 2, 3 of theabove-described wall formworks 1, in order thus to enable a compatiblearrangement to form a combined wall formwork system. The anchor holerows 9 extend horizontally across the width 10 of a multi-purpose wallformwork 8 and thus end substantially at the lateral flat sides 15 of amulti-purpose wall formwork 8.

An anchor hole row 9 in this case comprises a plurality of anchor holes5 disposed distributed over the width 10 of a multi-purpose wallformwork, so that the multi-purpose wall formwork 8 can be adapted andused as required. In the case of FIG. 2, the anchor holes of an anchorhole row 9 are covered by a closure means 11, which ends flush with theformwork facing 19, with the exception of an anchor hole 5 that is leftfree. In this case, the closure means 11 is configured as a panel orstrip provided on the outer face of the multi-purpose wall formwork 8configured as a formwork facing 19. In particular, this is a plasticstrip having a hole 5, which can easily be cut to the desired size forclosing the desired anchoring holes of the wall formwork. Therefore, themulti-purpose wall panel initially comprises, in particular, plasticstrips that are longer than the width 10 and which are thereforeinserted only after having been cut to size, as shown in FIG. 2.Preferably, the closure means 11 is disposed in a recess of the outerface configured as a formwork, in particular in such a way that theclosure means 11 ends flush with the formwork. The closure means 11 thusaccommodated enables a sealing connection to the formwork, so thatconcrete is prevented from leaking out.

In principle, the closure means 11 for the anchor holes can also beconfigured to consist of multiple parts. One or more closure means canin this case be attached to the anchor hole row 9 as required, in orderto obtain a closure of the anchor hole row 9. It is also possible toconfigure a closure means 11 with separable sections and/or holeportions. Thus, the closure means 11 can be flexibly adapted to therequired dimensions. Alternatively or additionally, a hole portion for arequired anchor rod can also be removed manually from the closure means11 in order thus to enable the introduction of an anchor rod through amulti-purpose wall formwork 8.

FIG. 3 shows a detailed view of an anchor hole row 9 in a multi-purposewall formwork 8. The anchor holes 5 of an anchor hole row 9 are provideddistributed at a uniform spacing relative to each other across the widthof the multi-purpose wall formwork 8, for example in a spacing of 5 cmto each other. The anchor hole row 9 is rigidly connected in particularto the frame 12 of the multi-purpose wall formwork 8. The frame 12preferably consists of longitudinal beams 13 and crossbars 14. For aconstructionally advantageous connection of the anchor hole row 9 to theframe 12, the anchor hole row 9 preferably comprises a reinforcing strip18. The latter is firmly connected in particular to the frame 12 of themulti-purpose wall formwork 8. For this purpose, the reinforcing strip18 can be inserted correspondingly between crossbars 14 of the frame 12and firmly connected. It has been found to be advantageous to disposeand attach the reinforcing strip 18 offset in the direction of theformwork, as shown in FIG. 3, for example by welding or through the useof a corresponding profile. In that case, a closure means 11 can thenalso be inserted into the recess thus provided, in order to be able toquickly see, from the rear shown in FIG. 3, which anchor hole isavailable.

Preferably, one or more transverse holes 16, which extend substantiallyorthogonally to the anchor holes 5, are provided on the lateral flatsides 15 of the multi-purpose wall formwork 8. This enables theconnection of the multi-purpose wall formwork 8 via the flat sides 15,so that a flexible arrangement of the multi-purpose wall formwork 8 ispossible, for example to prepare precise corner-shaped wall formworks.

Preferably, the transverse holes 16 are provided at the level of theanchor holes 5, i.e. at the level of the anchor hole rows 9. Preferably,the anchor hole rows 9 of the multi-purpose wall formwork 8 are adaptedto the corresponding level of the anchor holes 5 in a wall formwork 1according to the invention. Accordingly, the vertical spacing of theanchor hole rows 9 can match the grid spacing 2, 3 of the wall formwork.This improves the compatibility between multi-purpose wall formworks 8and wall formworks 1, so that a variety of combinations to form a wallformwork system is made possible. It is also possible to provide atleast one frame hole 17, which can be used like an anchor hole 5, on theframe 12 of a multi-purpose wall formwork 8, in particular at the edge.

The multi-purpose formwork element 8 can be used particularlyadvantageously with at least one wall formwork according to the proposalfor forming corners, wall junctions, columns, pillars or the like. Theadaptability of the multi-purpose wall formwork 8 contributes to thenumber of required wall formworks being reduced and to being able todispense with special corner wall formworks for walls of differentthicknesses. This contributes to a rational production and assembly of aformwork with a complex configuration.

It is apparent from the above statements that the wall formworks aregenerally combined in a variety of ways in order to preparelarge-surface wall formworks or complex wall formwork courses. Thismeans that the interconnected wall formworks as well as the optionallyprovided multi-purpose formworks are exposed to different load levelsdue to concrete pressures, particularly depending on the height of theconfigured wall formwork.

In view of the different loads on a wall formwork, it becomes clear thatthe load-adapted, rugged structure of the wall formwork 1 according tothe proposal and the corresponding dimensioning of the wall formwork 1are of particular importance. The excessive concrete pressures in a wallformwork combined in whatever fashion, which also arise, lead to anoverloading of anchor points, which in the end also jeopardizes areliable anchoring of the wall formwork. Such overloads on anchor pointsin the case of a combined arrangement of a plurality of wall formworks 1and optionally provided multi-purpose wall formworks 8 can be avoidedwith simple means by means of the wall formwork systems according to theproposal, even under difficult conditions, such as large-surfaceformworks or complex wall formwork courses.

In FIG. 4, wall formworks 1 are shown in standing and lying positions.Moreover, particularly preferred spacings are given in centimeters.Thus, the system shown here comprises wall formworks 1 with a surfacearea of preferably 240 cm*300 cm and six anchor holes 5 as well as wallformworks 1 with a surface area of preferably 120 cm*300 cm and threeanchor holes 5. The wall formworks with three anchor holes 5 aretherefore half the width of the wall formworks with six anchor holes.Advantageously, the system additionally comprises at least square wallformworks 21 with only a single centrally disposed anchor hole, in orderto fill small gaps if necessary. The surface area of the wall formwork21 preferably is 120 cm*120 cm.

REFERENCE NUMERALS

-   1 Wall formwork-   2 Horizontal grid spacing-   3 Vertical grid spacing-   4 Spacing from edge-   5 Anchor hole-   6 Horizontal edge boundary-   7 Vertical edge boundary-   8 Multi-purpose wall formwork-   9 Anchor hole row-   10 Width of 8-   11 Closure means-   12 Frame-   13 Longitudinal beam-   14 Crossbar-   15 Flat side of 8-   16 Transverse hole-   17 Frame hole-   18 Reinforcing strip for 9-   19 Formwork facing-   20 Wall formwork

1. A wall formwork for concrete structures, comprising a basic body, anouter face configured as a formwork facing, and anchor holes for thedetachable connection to other wall formworks, wherein the anchor holesare disposed with a uniform grid spacing relative to each other, whereinthe wall formwork is dimensioned in such a way that the spacing of theanchor holes to the outer vertical and/or horizontal boundary of thewall formwork corresponds to half of the grid spacing, wherein theanchor holes are disposed axisymmetrically in the wall formwork, whereinthe anchor holes are disposed on at least two parallel spaced-apartaxes, and at least three anchor holes are provided along an axis,wherein the arrangement of the anchor holes in the wall formwork isdesigned in such a way that the anchor holes extend through the frame ofthe wall formwork.
 2. A wall formwork for concrete structures,comprising a basic body, an outer face configured as a formwork facing,and anchor holes for the detachable connection to other wall formworks,wherein the anchor holes are disposed with a substantially uniform gridspacing relative to each other, wherein the wall formwork is dimensionedin such a way that the spacing of the anchor holes to the outer verticaland/or horizontal boundary of the wall formwork corresponds to half ofthe grid spacing or at least substantially half of the grid spacing,wherein the arrangement of the anchor holes in the wall formwork isdesigned in such a way that the anchor holes extend through the frame ofthe wall formwork.
 3. The wall formwork according to claim 2, whereinthe anchor holes are disposed symmetrically, in particularaxisymmetrically, in the wall formwork.
 4. The wall formwork accordingto claim 2, wherein the anchor holes are disposed on at least twoparallel spaced-apart, in particular vertically extending, axes, andpreferably at least three anchor holes are provided along an axis. 5.The wall formwork according to claim 2, wherein the height of the wallformwork is between 280 cm and 380 cm, particularly preferably 300 cm or360 cm, and/or wherein the width of the wall formwork is between 200 cmand 300 cm, more preferably between 220 cm and 260 cm.
 6. The wallformwork according to claim 2, wherein the grid spacing of the anchorholes relative to each other is at least 60 cm, more preferably at least80 cm, or wherein the grid spacing of the anchor holes relative to eachother is no greater than 160 cm, more preferably no greater than 140 cm.7. The wall formwork according to claim 2, wherein the spacing of theanchor holes to the outer horizontal and/or vertical boundary of thewall formwork is at least 20 cm, more preferably at least 30 cm.
 8. Awall formwork system comprising at least one wall formwork according toclaim 1 and at least one multi-purpose wall formwork, wherein themulti-purpose wall formwork comprises a basic body, an outer faceconfigured as a formwork facing, and anchor holes for the detachableconnection to other wall formworks, wherein at least one horizontallyextending anchor hole row with a plurality of anchor holes is providedon the multi-purpose wall formwork, on which at least one closure meansfor anchor holes can be or is attached, preferably in such a way thatthe closure means ends substantially flush with the outer faceconfigured as a formwork facing.
 9. The wall formwork system accordingto claim 8, wherein the height of the anchor hole row(s) in themulti-purpose wall formwork corresponds to the height of the anchor holerow in the multi-purpose wall formwork.
 10. A wall formwork systemcomprising a plurality of wall formworks, wherein at least two wallformworks are configured according to claim 1, wherein the at least twowall formworks have at least two different dimensions, in particularheight and/or width.
 11. The wall formwork system according to claim 10,wherein the difference in width of different wall formworks, with regardto the amount, is 15 cm or a multiple of 15 cm, and preferably thesmallest width of a formwork element is 45 cm and/or the largest widthof a formwork element is 240 cm.
 12. The wall formwork system accordingto claim 9, wherein the difference in height of different wallformworks, with regard to the amount, is 30 cm or a multiple of 30 cm,and preferably the smallest height of a formwork element is 45 cm and/orthe largest height of a formwork element is 360 cm.
 13. The wallformwork system according to claim 9, wherein at least one wall formworkcan be mounted rotated by 90°, and/or comprises two identical wallformworks, wherein one wall formwork is disposed rotated by 90° ascompared to the other wall formwork.
 14. The wall formwork systemaccording to claim 9, wherein wall formworks having a width exceeding200 cm, in particular exceeding 220 cm, comprise at least two parallelspaced-apart, vertically extending axes on which the anchor holes aredisposed.
 15. The wall formwork system according to claim 9, whereinwall formworks having a height exceeding 260 cm, in particular exceeding280 cm, comprise at least three anchor holes, which, in particular, aredisposed along a vertically extending axis.
 16. The wall formwork systemaccording to claim 9, comprising a multi-purpose wall formwork, whereinthe width of the multi-purpose wall formwork is between 85 to 125 cm,preferably 105 cm.